Re: [ccp4bb] AW: unusual monoclinic relation?

2016-12-19 Thread David Schuller
On 12/19/16 11:25, herman.schreu...@sanofi.com wrote: Dear Andy, I don’t think you will solve this pre-Xmas ... There is hope of a pre-Christmas solution. Convert to Eastern Orthodox; that will provide an extra two weeks margin, due to the Orthodox use of the Julian calendar. --

[ccp4bb] AW: unusual monoclinic relation?

2016-12-19 Thread Herman . Schreuder
Dear Andy, I don't think you will solve this pre-Xmas, but here are some more suggestions: -is there any relationship with the unit cell of the parent, unmutated protein? This might give some ideas of the packing of the problem crystals. -are some promising solutions being rejected due to

[ccp4bb] AW: unusual monoclinic relation?

2016-12-19 Thread Herman . Schreuder
Dear Andrew, Just a few questions: -Do the processing/refinement programs suggest twinning? -Are you sure your space group is P21 and not P2? Did you try MR in P2? -How many protein molecules do you expect in the asymmetric unit? P2(1) is a very low symmetry space group. In this case I would not